A POPULAR CLICHé of 2020 was that covid-19 accelerated pre-existing trends. Yet that is a poor description of the massive rupture to office work. Before the pandemic Americans spent 5% of their working time at home. By spring 2020 the figure was 60%. The shift has gone better than expected. People are working longer hours, but they report higher levels of happiness and productivity. As lockdowns lift, working from home is likely to stay.